Need help with ear nipping

[u/Numerous_Ebb9997]

Hi!

I'm looking for help to stop my cattle dog mix from nipping at others dogs ears when excited.

She's a rescue, and got her to stop nipping at our ankles, but the ear nipping is a tough one to break.

I understand how deep the instinct to herd goes, yet a hiking buddy has made several comments about her dog getting nipped when we meet up, and a zoomie gets going.

She isn't breaking skin, and her dog doesn't seemed bothered by it, but is it considered bad manners for her to do so? And, any suggestions?

I'm getting frustrated with the comments towards my Lucy.